County · Wisconsin
Polk County, Wisconsin: drinking water records
This overview covers 14 ZIP codes and 12 community water systems in Polk County. It also stands in for 2 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Amery Waterworks WI6490328 | 2,962 | 0 | 0 | 1 | 0 ppb |
| Osceola Waterworks WI6490341 | 2,680 | 0 | 0 | 1 | 0.3 ppb |
| Clayton Waterworks WI6490334 | 765 | 0 | 0 | 1 | 4.3 ppb |
| Amani Village Sanitary Dist WI6490342 | 100 | 0 | 0 | 2 | 3.0 ppb |
| St Croix Falls Waterworks WI6490343 | 2,079 | 0 | 0 | 0 | 4.7 ppb |
| Frederic Waterworks WI6490337 | 1,241 | 0 | 0 | 0 | 1.5 ppb |
| Luck Waterworks WI6490338 | 1,150 | 0 | 0 | 0 | 2.1 ppb |
| Clear Lake Waterworks WI6490335 | 1,061 | 0 | 0 | 0 | 2 ppb |
| Balsam Lake Waterworks WI6490330 | 1,031 | 0 | 0 | 0 | 1 ppb |
| Dresser Waterworks WI6490336 | 936 | 0 | 0 | 0 | 2 ppb |
| Milltown Waterworks WI6490339 | 915 | 0 | 0 | 0 | 3 ppb |
| Centuria Waterworks WI6490332 | 900 | 0 | 0 | 0 | 2.8 ppb |
ZIP reports in Polk County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 54006, 54826.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.